The Georgia Department of Transportation has selected contractor C.W. Matthews to build the next phase of the I-85 widening project northeast of Atlanta.

The Marietta-based firm was one of three companies that submitted proposals for the project, which would widen I-85 from two lanes to three lanes in both directions from Ga. 53 to U.S. 129 in Jackson County. The project includes replacing six bridges and one overpass along the 6.7-mile stretch of highway.

C.W. Mathews would charge $94.6 million for the project. Final design work is expected to begin late this year, with construction beginning in 2021. The project is expected to be finished by 2023.

The company also is working on the first phase of the I-85 widening, from I-985 in Gwinnett County to Ga. 53. That project will be finished later this year.